Solomon n



(No Mode-1.)

s. N. GARVALHO.

APPARATUS FOR SUPERHEATING STEAM AND HEATING AIR. No. 270,281. PatentedJan. 9,1883.

WITNESSES- 'INVENTOR T ORNEY N. PErEnS, Phulo-Lifljognuhcr. Waslnnglowno w/Zwzhv A I r f 7 UNITED STATES PATENT OFFICE.

SOLOMON N. CARVALHO, OF NEW YORK, N. Y.

APPARATUS FOR SUPERHEATING STEAM AND HEATING AIR.

SPECIFICATION forming part of Letters Patent No. 270,281, dated January9, 1883.

Application filed April 5, 1882. No model.) A

.1" all whom it may concern Be it known that I, SOLOMON N. UARVALHO, ofthe city, county, and State of New York, have invented certainnewanduseful Improvements in Apparatus for Superheating Steam and HeatingAir, of which the following is a specification.

This invention has reference to improve ments in the apparatusforsuperheating steam or healing air for which Letters Patent of theUnited States have been granted to me, No. 249,502, and dated November15, 1881., theimprovements being designed with a view to simplify theconstruction of the apparatus and render the same less expensive; andthe invention consists of a U-shaped retort, which is provided at thelower or bent part, where it is exposed to the tire, with ajacket orcovering, which is attached thereto by suitable means. The retort issupported by a collar or plate, cast in one piece with the retort, uponthe top plate of the furnace. The U-shaped retort is extended above thetop plate and provided with flanges for making the connections with thesteam or air conducting pipes.

In the accompanying drawings,Figure 1 represents a side elevation ofmyimproved apparatus for superheating steam or heating air. Fig. 2 is avertical central section of a retort; Fig. 3 a top view, and Fig. at ahorizontal section on line 00 00, Fig. 2, of the retort; and Fig. is atop view of the top plate of the furnace.

Similar letters of reference indicate correspondin g parts.

My improved apparatus for superheating steam or heating air is composedof one or more retorts,A A, which are preferably ar' ranged in battery,and are heated by the fire of a furnace, (3, upon the cast-iron topplate, 0, of which they are supported by a collar or plate, a. Eachretort A is made of U shape (of any suitable material) or cross-section,and preferably cast in one piece, with the collar a at the'upper part.The legs of the retort are extended above the top plate, 0, and providedwith flanged endsb, for making the connection with the next adjoiningretort, or the steam or air conducting pipes. The adjoining legs of tworetorts, A A, are connected by semicircular pipe bends orcouplingsB,which are tightly screwed by means of end flanges to the flan gedadjoining legs of, the retorts A A. The outer legs of the retorts arepreferably made longer than the adjoining legs, as shown clearly in thelower part of the retort as faras the same is exposed to the directaction of the fire, and

which prevents the burning out of the lower part of the retort.Thejacket or covering A isapplied to the lower part of the U-shapedretort, either by means of suspending-bolts d, attached to ears d of thejacket, or by means of transverse keys, or by any other equivalent meanswhereby the jacketis supported in position on the bottom part of theretort. VVhenever the jacket or covering is burned out by use thefastening bolts or keys are removed and the jacket is dropped into thefurnace, and thence into the ash-pit, to be removed. A new jacket isthen applied to the'lower end of each retort, after which the apparatusis again ready for use.

The legs of retorts A, as well as the jackets C, are preferably providedat theiroutside with longitudinal ribs e, whereby a better transmissionof the heat from the outside of the retort to the inside is obtained. Bymaking the retort i'n the shape of to U and casting it in one piece withthe connecting collar and end flanges it can be manufactured with butlittle cost, while by the use of the jacket full pro tection is given tothe bottom part against the injurious effects of the direct fire.

The apparatus may be used for superheating steam, or for heating air, asrequired, the latter- I do ing air, made of U shape, and provided with asupporting top plate, a, connecting the legs of the retort, andconnected flanges at the up- 15 l per ends, all cast in one pieceWithout joint,- substantially as set forth.

In testimony that I claim the foregoing as my invention 1 have signed myname in pres ence of two subscribing Witnesses.

, SOLOMON N. OARVALHO.

Witnesses PAUL GoEPEL, CARL KARP.

